mirror of https://github.com/moparisthebest/curl
zz40-xc-ovr.m4: provide XC_CONFIGURE_PREAMBLE macro
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Yang Tse
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commit
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#---------------------------------------------------------------------------
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#
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# zz40-xc-ovr.m4
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#
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# Copyright (c) 2013 Daniel Stenberg <daniel@haxx.se>
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#
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# Permission to use, copy, modify, and distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#
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#---------------------------------------------------------------------------
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# serial 1
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dnl The funny name of this file is intentional in order to make it
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dnl sort alphabetically after any libtool, autoconf or automake
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dnl provided .m4 macro file that might get copied into this same
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dnl subdirectory. This allows that macro (re)definitions from this
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dnl file may override those provided in other files.
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dnl _XC_CONFIGURE_PREAMBLE_COMMENT
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dnl -------------------------------------------------
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dnl Private macro.
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AC_DEFUN([_XC_CONFIGURE_PREAMBLE_COMMENT],
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[
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## ---------------------------- ##
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## XC_CONFIGURE_PREAMBLE rev: 1 ##
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## ---------------------------- ##
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])
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dnl _XC_CHECK_COMMAND_TEST
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dnl -------------------------------------------------
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dnl Private macro.
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dnl
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dnl Check that 'test' command is available, else abort.
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AC_DEFUN([_XC_CHECK_COMMAND_TEST],
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[dnl
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#
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# Require that 'test' command is available.
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#
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xc_tst_str='unknown'
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test -n "$xc_tst_str" && xc_tst_str='success'
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case "x$xc_tst_str" in
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xsuccess)
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:
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;;
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*)
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echo "configure: error: 'test' command not found. Can not continue."
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exit 1
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;;
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esac
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])
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dnl _XC_CHECK_PATH
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dnl -------------------------------------------------
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dnl Private macro.
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dnl
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dnl Check that PATH is set, otherwise abort.
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AC_DEFUN([_XC_CHECK_PATH],
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[dnl
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AC_REQUIRE([_XC_CHECK_COMMAND_TEST])dnl
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#
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# Require that PATH variable is set.
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#
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xc_tst_str='unknown'
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test -n "$PATH" && xc_tst_str='success'
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case "x$xc_tst_str" in
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xsuccess)
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:
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;;
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*)
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echo "configure: error: PATH variable not set. Can not continue."
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exit 1
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;;
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esac
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])
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dnl _XC_CHECK_COMMAND_EXPR
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dnl -------------------------------------------------
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dnl Private macro.
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dnl
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dnl Check that 'expr' command is available, else abort.
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AC_DEFUN([_XC_CHECK_COMMAND_EXPR],
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[dnl
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#
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# Require that 'expr' command is available.
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#
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xc_tst_str='unknown'
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xc_tst_str=`expr "$xc_tst_str" : '.*'`
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case "x$xc_tst_str" in
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x7)
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:
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;;
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*)
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echo "configure: error: 'expr' command not found. Can not continue."
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exit 1
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;;
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esac
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])
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dnl _XC_CHECK_UTILITY_SED
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dnl -------------------------------------------------
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dnl Private macro.
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dnl
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dnl Check that 'sed' utility is found within PATH. This
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dnl 'sed' is required in order to allow configure script
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dnl bootstrapping itself. No fancy testing for a proper
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dnl 'sed' this early please, that should be done later.
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AC_DEFUN([_XC_CHECK_UTILITY_SED],
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[dnl
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#
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# Require that 'sed' utility is found within PATH.
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#
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xc_tst_str='unknown'
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xc_tst_str=`echo "$xc_tst_str" | sed -e 's:unknown:success:'`
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case "x$xc_tst_str" in
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xsuccess)
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:
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;;
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*)
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echo "configure: error: 'sed' utility not in PATH. Can not continue."
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exit 1
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;;
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esac
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])
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dnl _XC_CHECK_UTILITY_GREP
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dnl -------------------------------------------------
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dnl Private macro.
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dnl
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dnl Check that 'grep' utility is found within PATH. This
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dnl 'grep' is required in order to allow configure script
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dnl bootstrapping itself. No fancy testing for a proper
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dnl 'grep' this early please, that should be done later.
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AC_DEFUN([_XC_CHECK_UTILITY_GREP],
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[dnl
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#
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# Require that 'grep' utility is found within PATH.
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#
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xc_tst_str='unknown'
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echo "$xc_tst_str" | grep 'unknown' >/dev/null 2>&1 && xc_tst_str='success'
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case "x$xc_tst_str" in
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xsuccess)
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:
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;;
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*)
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echo "configure: error: 'grep' utility not in PATH. Can not continue."
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exit 1
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;;
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esac
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])
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dnl _XC_CHECK_PATH_SEPARATOR
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dnl -------------------------------------------------
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dnl Private macro.
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dnl
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dnl Check and compute the path separator for us. This
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dnl path separator is the symbol used to diferentiate
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dnl or separate paths inside the PATH environment var.
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dnl
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dnl User provided PATH_SEPARATOR always overrides the
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dnl auto-detected one.
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AC_DEFUN([_XC_CHECK_PATH_SEPARATOR],
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[dnl
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AC_REQUIRE([_XC_CHECK_COMMAND_TEST])dnl
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AC_REQUIRE([_XC_CHECK_PATH])dnl
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AC_REQUIRE([_XC_CHECK_COMMAND_EXPR])dnl
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#
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# Auto-detect and set PATH_SEPARATOR, unless it is already set.
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#
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# Directory count in PATH when using a colon separator.
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xc_tst_dirs_col=0
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xc_tst_prev_IFS=$IFS; IFS=':'
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for xc_tst_dir in $PATH; do
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IFS=$xc_tst_prev_IFS
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test -d "$xc_tst_dir" && xc_tst_dirs_col=`expr $xc_tst_dirs_col + 1`
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done
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IFS=$xc_tst_prev_IFS
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# Directory count in PATH when using a semicolon separator.
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xc_tst_dirs_sem=0
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xc_tst_prev_IFS=$IFS; IFS=';'
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for xc_tst_dir in $PATH; do
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IFS=$xc_tst_prev_IFS
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test -d "$xc_tst_dir" && xc_tst_dirs_sem=`expr $xc_tst_dirs_sem + 1`
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done
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IFS=$xc_tst_prev_IFS
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if test $xc_tst_dirs_sem -eq $xc_tst_dirs_col; then
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# When both counting methods give the same result we do not want to
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# chose one over the other, and consider auto-detection not possible.
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if test -z "$PATH_SEPARATOR"; then
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# Stop dead until user provides PATH_SEPARATOR definition.
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echo "configure: error: PATH_SEPARATOR variable not set. Can not continue."
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exit 1
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fi
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else
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# Separator with the greater directory count is the auto-detected one.
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if test $xc_tst_dirs_sem -gt $xc_tst_dirs_col; then
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xc_tst_auto_separator=';'
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else
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xc_tst_auto_separator=':'
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fi
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if test -z "$PATH_SEPARATOR"; then
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# Simply use the auto-detected one when not already set.
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PATH_SEPARATOR="$xc_tst_auto_separator"
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elif "x$PATH_SEPARATOR" != "x$xc_tst_auto_separator"; then
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echo "configure: warning: PATH_SEPARATOR does not match auto-detected one."
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fi
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fi
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AC_SUBST([PATH_SEPARATOR])dnl
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])
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dnl _XC_CONFIGURE_PREAMBLE
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dnl -------------------------------------------------
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dnl Private macro.
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AC_DEFUN([_XC_CONFIGURE_PREAMBLE],
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[dnl
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AC_REQUIRE([_XC_CONFIGURE_PREAMBLE_COMMENT])dnl
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AC_REQUIRE([_XC_CHECK_COMMAND_TEST])dnl
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AC_REQUIRE([_XC_CHECK_PATH])dnl
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AC_REQUIRE([_XC_CHECK_COMMAND_EXPR])dnl
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AC_REQUIRE([_XC_CHECK_UTILITY_SED])dnl
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AC_REQUIRE([_XC_CHECK_UTILITY_GREP])dnl
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AC_REQUIRE([_XC_CHECK_PATH_SEPARATOR])dnl
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echo "checking whether some basic commands and utilities are available... yes"
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])
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dnl XC_CONFIGURE_PREAMBLE
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dnl -------------------------------------------------
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dnl Public macro.
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dnl
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dnl This macro macro emits shell code which does some
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dnl very basic checks related with the availability
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dnl of some commands and utilities needed to allow
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dnl configure script bootstrapping itself when using
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dnl these to figure out other settings. Also performs
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dnl PATH_SEPARATOR auto-detection and sets its value
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dnl unless it is already set.
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dnl
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dnl These basic checks are intended to be placed and
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dnl executed as early as possible in the resulting
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dnl configure script, and as such these must be pure
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dnl shell code.
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dnl
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dnl Although this is a public macro it should not be
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dnl used directly from configure.ac given that in this
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dnl way its expansion is not placed early enough in
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dnl generated configure script, it simply makes little
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dnl sense to perform these basic checks once the script
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dnl is into more serious business.
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dnl
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dnl The proper way of making this macro expand early
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dnl enough in configure script is using XC_OVR_ZZ40
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dnl in configure.ac which takes care of everything.
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AC_DEFUN([XC_CONFIGURE_PREAMBLE],
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[dnl
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AC_PREREQ([2.50])dnl
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AC_BEFORE([$0],[_XC_CONFIGURE_PREAMBLE])dnl
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AC_BEFORE([$0],[_XC_CHECK_COMMAND_TEST])dnl
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AC_BEFORE([$0],[_XC_CHECK_PATH])dnl
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AC_BEFORE([$0],[_XC_CHECK_COMMAND_EXPR])dnl
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AC_BEFORE([$0],[_XC_CHECK_UTILITY_SED])dnl
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AC_BEFORE([$0],[_XC_CHECK_UTILITY_GREP])dnl
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AC_BEFORE([$0],[_XC_CHECK_PATH_SEPARATOR])dnl
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AC_REQUIRE([_XC_CONFIGURE_PREAMBLE])dnl
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m4_define([$0],[])dnl
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])
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dnl Override autoconf's PATH_SEPARATOR check
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dnl -------------------------------------------------
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dnl This is done to ensure that the same check is
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dnl used across different autoconf versions and to
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dnl allow us to expand XC_CONFIGURE_PREAMBLE macro
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dnl early enough in the generated configure script.
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dnl
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dnl Override when using autoconf 2.53 and newer.
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dnl
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m4_defun([_AS_PATH_SEPARATOR_PREPARE],
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[dnl
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AC_REQUIRE([XC_CONFIGURE_PREAMBLE])dnl
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m4_define([$0],[])dnl
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])
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dnl
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dnl Override when using autoconf 2.50 to 2.52
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dnl
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m4_defun([_AC_INIT_PREPARE_FS_SEPARATORS],
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[dnl
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AC_REQUIRE([XC_CONFIGURE_PREAMBLE])dnl
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ac_path_separator=$PATH_SEPARATOR
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m4_define([$0],[])dnl
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])
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dnl
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dnl Override when using libtool 1.4.2
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dnl
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m4_defun([_LT_AC_LIBTOOL_SYS_PATH_SEPARATOR],
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[dnl
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AC_REQUIRE([XC_CONFIGURE_PREAMBLE])dnl
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lt_cv_sys_path_separator=$PATH_SEPARATOR
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m4_define([$0],[])dnl
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])
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dnl XC_OVR_ZZ40
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dnl -------------------------------------------------
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dnl Placing a call to this macro in configure.ac will
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dnl make macros in this file visible to other macros
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dnl used for same configure script, overriding those
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dnl provided elsewhere.
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dnl
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dnl This is the proper and intended way in which macro
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dnl XC_CONFIGURE_PREAMBLE will expand early enough in
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dnl generated configure script.
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AC_DEFUN([XC_OVR_ZZ40],
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[dnl
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AC_BEFORE([$0],[AC_CHECK_TOOL])dnl
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AC_BEFORE([$0],[AC_CHECK_PROG])dnl
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AC_BEFORE([$0],[AC_CHECK_TOOLS])dnl
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AC_BEFORE([$0],[AC_CHECK_PROGS])dnl
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dnl
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AC_BEFORE([$0],[AC_PATH_TOOL])dnl
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AC_BEFORE([$0],[AC_PATH_PROG])dnl
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AC_BEFORE([$0],[AC_PATH_PROGS])dnl
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dnl
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AC_BEFORE([$0],[AC_PROG_SED])dnl
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AC_BEFORE([$0],[AC_PROG_GREP])dnl
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AC_BEFORE([$0],[AC_PROG_LN_S])dnl
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AC_BEFORE([$0],[AC_PROG_INSTALL])dnl
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AC_BEFORE([$0],[AC_PROG_MAKE_SET])dnl
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AC_BEFORE([$0],[AC_PROG_LIBTOOL])dnl
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dnl
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AC_BEFORE([$0],[LT_INIT])dnl
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AC_BEFORE([$0],[AM_INIT_AUTOMAKE])dnl
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AC_BEFORE([$0],[AC_LIBTOOL_WIN32_DLL])dnl
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dnl
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AC_BEFORE([$0],[AC_CONFIG_SRCDIR])dnl
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AC_BEFORE([$0],[AC_CONFIG_HEADERS])dnl
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AC_BEFORE([$0],[AC_CONFIG_MACRO_DIR])dnl
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AC_BEFORE([$0],[AC_CONFIG_MACRO_DIRS])dnl
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dnl
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m4_define([$0],[])dnl
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])
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